幾種正弦波基準(zhǔn)電壓信號(hào)產(chǎn)生方法的比較
作者:陳柳燕 張友軍 蘇州大學(xué) 機(jī)電工程學(xué)院 上傳時(shí)間:2013/1/9 17:04:24
摘要:本文首先介紹了幾種正弦波基準(zhǔn)電壓信號(hào)的產(chǎn)生方法,然后對(duì)每種方法進(jìn)行了實(shí)驗(yàn),并給出了實(shí)驗(yàn)波形,最后根據(jù)實(shí)驗(yàn)結(jié)果,對(duì)每種方法進(jìn)行了分析和比較。階梯波合成法電路結(jié)構(gòu)簡(jiǎn)單,但不易調(diào)節(jié)相位;DAC采樣法外圍電路結(jié)構(gòu)簡(jiǎn)單,且易于調(diào)節(jié)相位;SPWM濾波法由軟件控制,可調(diào)性好。
敘詞:正弦波 相位 總諧波失真 基準(zhǔn)電壓
Abstract:This paper analyzed some methods generating sinusoidal waveform reference voltage signal. On the basis of theoretical analysis, the experiment was done. The advantages and disadvantages of each method were given. The circuit structure of step wave generation method was simple but the phase could not be adjusted; The DAC generation method had less circuit, and the phase could be adjusted by program easily; SPWM generation method was controlled by software, it was adjustable.
Keyword:Sinusoidal waveform, Phase, Total harmonic distortion, Reference voltage
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